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Magnetics question

2015 · Shift 0 · Q54
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Magnetics question

2015 · Shift 0 · Q54

JEE MainPhysicsMagneticsMCQ+4 / −1
Two long current carrying thin wires, both with current I,I,I, are held by insulating threads of length LLL and are in equilibrium as shown in the figure, with threads making an angle ′θ′'\theta '′θ′ with the vertical. If wires have mass λ\lambdaλ per unit-length then the value of III is : (g=gravitationalaccelerationg=gravitationalaccelerationg=gravitationalacceleration ) JEE Main 2015 (Offline) Physics - Magnetic Effect of Current Question 190 English
  1. A
    2πgLμ0tan⁡θ2\sqrt {{{\pi gL} \over {{\mu _0}}}\tan \theta }2μ0​πgL​tanθ​
  2. B
    πλgLμ0tan⁡θ\sqrt {{{\pi \lambda gL} \over {{\mu _0}}}\tan \theta }μ0​πλgL​tanθ​
  3. C
    sin⁡θπλgLμ0 cos⁡θ\sin \theta \sqrt {{{\pi \lambda gL} \over {{\mu _0}\,\cos \theta }}}sinθμ0​cosθπλgL​​
  4. D
    2sin⁡θπλgLμ0 cos⁡θ2\sin \theta \sqrt {{{\pi \lambda gL} \over {{\mu _0}\,\cos \theta }}}2sinθμ0​cosθπλgL​​
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